* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: scroll;
    overflow-x: hidden;
    overflow-y: yes;
}

html {
    background-color: #f4f4f4;
}

a {
    text-decoration: none;
    color: black;
}

img {
    vertical-align: middle;
}

li {
    list-style: none;
}

/* 头部通用样式 */

nav {
    position: relative;
    display: flex;
    width: 1280px;
    height: 4.125rem;
    background: #FFFFFF;
}

nav .nav_left {
    position: absolute;
    left: 0;
    background: #FFFFFF;
    line-height: 4.125rem;
}

nav .nav_left img:nth-child(1) {
    width: 50px;
    height: 42px;
    margin-left: 70px;
}

nav .nav_left img:nth-child(2) {
    width: 183px;
    height: 20px;
    margin-left: 16px;
}

nav .nav_right ul {
    position: absolute;
    right: 70px;
    display: flex;
    background: #FFFFFF;
    line-height: 4.125rem;
}

nav .nav_right ul li {
    margin-left: 84px;
    font-size: 1.125rem;
    font-family: Microsoft YaHei;
}

/* 底部导航通用样式 */

footer {
    position: relative;
    height: 410px;
    background-color: #083854;
}

footer .top {
    height: 42px;
    position: relative;
    top: 3.375rem;
}

footer .top .top_left {
    position: absolute;
    left: 9.625rem;
    display: flex;
}

footer .top .top_left span {
    width: 168px;
    /* height: 31px; */
    margin-left: 16px;
    font-size: 24px;
    font-family: YouSheBiaoTiHei;
    font-weight: 400;
    line-height: 42px;
    color: #FFFFFF;
}

footer .top .top_right {
    position: absolute;
    right: 126px;
}

footer .top .top_right ul {
    display: flex;
}

footer .top .top_right ul li {
    width: 72px;
    height: 42px;
    font-size: 18px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    line-height: 42px;
    color: #FFFFFF;
    margin-right: 156px;
}

footer .top .top_right ul li:nth-child(1) {
    width: 144px;
}

footer .center {
    height: 165px;
}

footer .center .one {
    position: absolute;
    top: 104px;
    left: 628px;
    display: flex;
    width: 774px;
}

footer .center .one li {
    width: 186px;
    margin-right: 112px;
}

footer .center .one ul li {
    height: 19px;
    margin-bottom: 18px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 19px;
    color: #8B8F99;
}

footer .bottom {
    position: relative;
    border-top: 1px solid #8B8F99;
    width: 100%;
    height: 140px;
    margin-top: 70px;
}

footer .bottom span {
    position: absolute;
    left: 368px;
    display: block;
    width: 558px;
    height: 20px;
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 19px;
    text-align: center;
    color: #8B8F99;
}

footer .bottom span:nth-child(1) {
    top: 40px;
}

footer .bottom span:nth-child(2) {
    top: 80px;
}